函数c32rtomb和mbrtoc32来自/在CUnicodeTR(draft)中被描述为执行UTF-321和“多字节字符”之间的转换。(...)Ifsisnotanullpointer,thec32rtombfunctiondeterminesthenumberofbytesneededtorepresentthemultibytecharacterthatcorrespondstothewidecharactergivenbyc32(includinganyshiftsequences),andstoresthemultibytecharacterrepresentationint